Vacuum-sweeper.



F. B. SHAFER.

VACUUM SWEEPER.

APPLIOATION FILED APR. 12, 1910.

Patented Feb. 7, 1911,

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UNITED STATESI PATENT OFFICE.

FRANK. B. si-iAFER, or NoR'rHviLLE,

MICHIGAMYASSIGNOR or ONE-THIRD Vfro JAMES A. iDUBUAR AND cnn-THIRD rro WILLIAM e.

YERKES, OF NORTHVILLE, MICHIGAN.

. Patented Feb. 7, 191i.,

Applicationhled April 12, 1910. Serial No. 554,953.

To all 'whom it 'ma/y concern:

Be it known that I, FRANK B. Snaren, a citizen of the United States of America, residing at Northvill-e," in the county of lVayne and State of Michigan, have invented certain new and useful Improvements in vVacuum-Sweepers, of which the following is a specification, reference being had therein to the accompanying drawings.l

Y This invention relates to a vacuum cleaner for removing dust or dirt from carpets,Y

walls and the like, and more particularly to an arrangement thereof that eectually arrests all dust drawn into the apparatus and at the same time prevents the introduction of the dust into the valves and working parts of the apparatus. 'Y f The invention also includes means for cleaning the dust screen. 4

The invention consists in the matters hereinafter set forth vand more particularly pointed out in the appended claims.

Referring to the drawings, Figure .1 is a view in longitudinal section throughsa machine involving` features of the invention; Fig, 2 is a view in detail of adust screen and cleaner;,'and Fig. 3 is a view in detail of a clamp.

In the drawings a upright position divided by a flexible diaphragm 3. Preferably thedrum consists of two opposing secdrum 1 is mounted in tions 4 and 5 between whose margins theA diaphragm is clamped. -Valve seats G in each section are provided with .closures 7 adapted to open inwardly, springs 8 or like means holding them normally in closed position. Relier' valves 9 control outlet open- A suction pipe 10 on the drum covering the valve closures 7 has telescopic engagement with the end of a ipe 11 that extends over the upper part rom the cover 12v of an upright cylindrical dust chamber 13 resting on thebase 2. ,A Ufshaped clamp 14 embracing the pipel 11 has 'downturned 16 of the drum sections 4 and 5 and detachably secure the dust chamber 13 in place, a gasket 17 sealingthe joint between the pipes 1() and 11. i

`A wire cage 18 depends from the bottom of a circular casing 19 that is held in telescopicv engagement with'an annular flange 20 depending from the cover 12. The casing isdivided by a transverse partition 21 into 4cage 'and carries spring ample, a crank close to and directed against the on a suitable base 2 and is ends 15 ywhich hook .two compartments one of which is provided, 22 to allow the passage oair with openings upwardly into the pip c11,.a sponge or other" suitable dust farrester filling the spac the o penings22. A dust screen 23 of vbolt- .ing cloth or likesuitable material envelope the cage 18. A gasket 24 seals the joint between the cover 12 and the dust chamber ,13.* A spindle 25 is journaled centrally in the beater arms 2G which snap past the upright bars of the cage 18 when the spindle is rotated and agitate the screen cloth 23. 'The shaft may be rotated by any lsuitable means, as, for eX- shaft 27 journaled in a suit.- able bearing or stuiing box 28 in the-cover 12 with its lower -end-adapted to non-rotatably interlock with the upper end of the shaft 25, as through the medium of a' cross pin 29 engaging longitudinal slots in'` theaxially apertured end of the spindle.

An intake vnipple 30 'in the end of the dust chamber, preferably near its top, leads into a duct Jformed by wall 31, the discharge end of the duct being base of the'v dust chamber.

The diaphragm 3 is reciprocated by any suitable means, as, for example, av stem 32 passing through a suitable bearing' or stuifing box 33 in the outer section 5 lof the drum, that is coupled by a link 34 with a lever 35 whose lower'end is pivoted tothe base 2.l

In operation, phragm draws dust reciprocation of1 the diavalves o`r into the drum. Rotation of the beater shaft dislodges any-dust collecting on the screen cloth and the apparatus 'may be readily taken apart' and manipulted without the use of tools.

Obviously, changes in struction may be made without departing from the spirit of the invention and I do not care to limitmyself to any particular form or'arrangement of parts.

What 1 claim as my invention is.:-

1. In a vacuum cleaner, a dust chamber, an inlet nipplediseharging toward the bottom of the chamber,a cover detachably secured in the chamber, an .outlet pipe extending from the cover, a depending iange on the cover around the pipe inlet, a dust ara suitably disposed e above into the dust chamber through the nipple where it is arrested' by -the screen and prevented from passing to the the details of eon-l i removably in the chamber resting casing l detachably engaging the iange and covering the pipe inlet, a cage depending from .the casing and inclosing inlet openings to the casing, a screening fabric enveloping the cage, and' means `for through the pipe e forming ay unit removab e from the chamlet, a screeninglfabric enveloping the cage,

, a spindle rotatable inthe cage, spring beater arms 0n the shaft adapted to sweep the cage members and' snap past against the fabric` when rotated, Vand means. for rotating the spindle.

3. In a vacuum cleaner, al dust chamber l having an inlet and outlet, a cage supported removably .in the chamber`around the out? let, a screeningfabric enveloping the cage, a spindle'rotatable in the cage, spring beater arms on lthe shaft' adapted to sweepthe ca 4e membersand snapfpast against the" fabric when rotated, means for rotating the around the out` operatively spindle, an exhausting' drum and means connected to the chamber outlet, for operating t-he drum.

4. In a vacuum cleaner, an inlet nipple discharging toward the bottom of the chamber, a cover detachably secured in the chamber, an outlet pipe extending yfrom the cover, a depending ange on the cover around the pi e inlet, a dust arresting casing detacha ly engaging the flange and covering the pipe inlet, a cage dependingfrom the casing and inclosing inlet openings `to the casing, a screening fabric enveloping the cage an exhausting' drum with an inlet ipe a apted to telesco en age the out et pipe, and aclamp a apted to o d the chamber and drum to ether with the4 inlet pipe and. chamber -outet' pipe in engagement. l I

In testimony whereof I afiix my signature in presence of two witnesses.

FRANKB. SHAFER.

a dust chamber,

Witnesses VC. R. 'S'rIc-KNEYQ` O'r'ro F. BARTHE 40 ically l 

